Python: Add test for wsgiref.simple_server

Author: RasmusWL

python/ql/test/library-tests/frameworks/stdlib/wsgiref_simple_server_test.py

@@ -0,0 +1,57 @@
+# This test file demonstrates how to use an application with a wsgiref.simple_server
+# see https://docs.python.org/3/library/wsgiref.html#wsgiref.simple_server.WSGIServer
+import sys
+import wsgiref.simple_server
+
+def ignore(*arg, **kwargs): pass
+ensure_tainted = ensure_not_tainted = ignore
+
+ADDRESS = ("localhost", 8000)
+
+
+# I wanted to showcase that we handle both functions and bound-methods, so it's possible
+# to run this test-file in 2 different ways.
+
+def func(environ, start_response): # $ MISSING: requestHandler
+    ensure_tainted(
+        environ, # $ MISSING: tainted
+        environ["PATH_INFO"], # $ MISSING: tainted
+    )
+    write = start_response("200 OK", [("Content-Type", "text/plain")])
+    write(b"hello") # $ MISSING: HttpResponse responseBody=b"hello"
+    write(data=b" ") # $ MISSING: HttpResponse responseBody=b" "
+
+    # function return value should be an iterable that will also be written to to the
+    # response.
+    return [b"world", b"!"] # $ MISSING: HttpResponse responseBody=List
+
+
+class MyServer(wsgiref.simple_server.WSGIServer):
+    def __init__(self):
+        super().__init__(ADDRESS, wsgiref.simple_server.WSGIRequestHandler)
+        self.set_app(self.my_method)
+
+    def my_method(self, _env, start_response): # $ MISSING: requestHandler
+        start_response("200 OK", [])
+        return [b"my_method"] # $ MISSING: HttpResponse responseBody=List
+
+
+case = sys.argv[1]
+if case == "1":
+    server = wsgiref.simple_server.WSGIServer(ADDRESS, wsgiref.simple_server.WSGIRequestHandler)
+    server.set_app(func)
+elif case == "2":
+    server = MyServer()
+elif case == "3":
+    server = MyServer()
+    def func3(_env, start_response): # $ MISSING: requestHandler
+        start_response("200 OK", [])
+        return [b"foo"] # $ MISSING: HttpResponse responseBody=List
+    server.set_app(func3)
+else:
+    sys.exit("wrong case")
+
+
+print(f"Running on http://{ADDRESS[0]}:{ADDRESS[1]}")
+
+server.serve_forever()